Wednesday, February 6, 2013

Intel(R) Centrino(R) Advanced-N 6235 Lag Spikes

This post is about troubleshooting the Intel Centrino Advanced N-6235 wireless adapter in Windows 8. There is a problem with this wireless card that is beginning to show up for a lot of people.


So, I decided a good use of this blog will be to post solutions to problems I encounter in the course of my dealings with new hardware, programming challenges, or otherwise anything related to technology. I know how annoying it is when I google a problem and I can't find any answers anywhere. I'm always happy when I see someone who has had a similar problem as me and posted their solution online. So now that will became one of the main focuses of this blog.

I bought a new Windows 8 laptop, the ASUS Zenbook UX51V.  This model comes with a Intel(R) Centrino(R) Advanced-N 6235 wireless network card. Everthing about his laptop is fine except that I was getting really high lag spikes that lasted about 2-4 seconds every minute or so. I thouht it had to be something with the wireless polling, ping times were high and correlated with the lag spikes in m video game (heroes of newerth).

Some people have had a lot of success using WLAN Optimizer to disable wireless background scanning to fix high ping intervals. (http://www.martin-majowski.de/wlanoptimizer/) However for me it did not seem to make a difference for Windows 8. Perhaps they will release a new version for W8.

What did seem to work and suggested by some other people here is turning on 802.11n mode and switching the Wireless Mode to 802.11g in the advanced config. That is the only thing that dramatically reduces the re-occuring high latency issues.

More on the workarounds here:
http://communities.intel.com/thread/31090

and here:
http://communities.intel.com/message/178418

I do not consider this a permanent solution. I believe INTEL needs to come out and address this issue and release a driver fix.